Atitit.减少http请求数方案
Atitit.减少http请求数方案
1. 原理与方法
界面调用js.jsp css.js， 如果存在缓存文件就返回缓存文件，否则
读取js css列表文件
读取文件，拼接成一个大的js css文件，然后缓存起来
作者:: ★(attilax)>>> 绰号:老哇的爪子 （ 全名：：Attilax Akbar Al Rapanui 阿提拉克斯 阿克巴 阿尔 拉帕努伊 ） 汉字名：艾龙， EMAIL:1466519819@qq.com
转载请注明来源： http://blog.csdn.net/attilax
1.1. -------jsp
<%@ page language="java" import="java.util.*,com.csmy.my.center.util.CTUtils" pageEncoding="UTF-8"%>
<%@ page import="com.attilax.util.connReduceDync"%>
<%@ page import="com.attilax.io.pathx"%>
<%
connReduceDync c=new connReduceDync();
//c.res="com.attilax,core/import.js,core/core.js,core/yaml.js|com.atilax.frmwk,/jquery-1.8.3.min.js ";
c.resfile="index/js.txt";
c.resfileUse=true;
//c.base = "" //def is approot
c.output="index/jobus_index.js"; //index/jobus.js
c.recreateMode=true; //else use append mode
//System.out.println(c.joinNout()); //trest mode
//System.out.println();/
// return;
%>
<%=c.readCacheOrjoinNout()%>
1.2. "index/js.txt";
index/img.js
com.atilax.frmwk/jquery-1.8.3.min.js
com.attilax/HRE.js
com.attilax/jsbridge/jsb_v8q414.js
com.attilax/templete/jquery.tmpl.js
com.atilax.frmwk/unslider.min.js
com.attilax/core/coreV3.js
cmsPhone4jobusImp/list.js
com.attilax/log/logV2.js
1.3. connReduceDync
package com.attilax.util;
import java.io.File;
import java.util.List;
import java.util.Map;
import com.attilax.coll.ListX;
import com.attilax.collection.listUtil;
import com.attilax.io.filex;
import com.attilax.io.pathx;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
/**
* servlet
* @author Administrator
*
* com.attilax.util.connReduceDync
*
*/
public class connReduceDync extends ConnReducerV2 {
public String resfile;
public boolean resfileUse=false;
public static void main(String[] args) {
connReduceDync c=new connReduceDync();
c.res="com.attilax,core/import.js,core/core.js,core/yaml.js|com.atilax.frmwk,/jquery-1.8.3.min.js ";
c.resfile="list/list_jss.txt";
c.resfileUse=true;
//c.base = pathx.webAppPath();
c.output="list/jobus_list.js"; //index/jobus.js
//c.output_css=c.base+"/list/jobus_list.css";
//c.isGeneCss=false;
c.recreateMode=true; //else use append mode
c.genefile=true;
System.out.println(c.joinNout()); //trest mode
//System.out.println(c.readCacheOrjoinNout());//product mode
//Map m=Maps.newLinkedHashMap();
//m.put("res",s);
System.out.println("--f");
}
public String readCacheOrjoinNout() {
output=pathx.fillFullpath(output);
if(new File(this.output).exists())
return filex.read(this.output);
return joinNout();
}
public String joinNout() {
output=pathx.fillFullpath(output);
gene() ;
return this.resCache;
}
private void gene() {
resfile=pathx.webAppPath()+"/"+resfile;
List<String> li=Lists.newLinkedList();
if(resfileUse==false)
li=parseLi(base);
if(resfileUse)
li=listUtil.trimLine( filex.read2list(this.resfile) );
for (String line : li) {
line = line.trim();
if (line.length() == 0)
continue;
importx(line);
}
reduce();
}
private List<String> parseLi(String base) {
List<String> li=Lists.newArrayList();
String reses=res;
String[] rows=reses.split("\\|");
for (String row : rows) {
String[] cols=CsvUtil.toCols(row);
String dir=cols[0];
for (int i=1;i<cols.length;i++) {
String f = cols[i].trim();
if(f.trim().startsWith("/"))
f=f.substring(1);
String full_file=dir+"/"+f;
li.add(full_file);
}
}
return li;
}
}
----------finis
